Chuck



FIG. 1 is a bottom view of a chuck in accordance with the present invention;

FIG. 2 is a side view of a chuck in accordance with the present invention;

FIG. 3 is a top view of a chuck in accordance with the present invention; and,

FIG. 4 is a perspective view of a chuck in accordance with the present invention. 

The ornamental design of a chuck, as shown and described. 